Lunges and squats; how soon after BBL? (Photos)

I'm 28 days post op from bbl and all I've done is light to moderate walking. I would like to start lunges and squats (without any added weights at this time as I've been told no weight lifting until 6-8 weeks).... unless that's ok of course and then I would start with only 8lbs each side..At this point is the fat grafted and is it ok for me to start doing more than walking?